Cytotoxic Natural Products from (Thunb. ex L.) D.Don.

is a commercially important tree native to Japan. The tree belongs to the ancient genus and has found important uses as a medicinal plant, as well as a main source of timber in Japan. In recent years, there has been an increased interest in discovering extended uses of as a source of novel bioactive natural products with potential applications as lead compounds for active principles of future drugs.

Magnetic ordering and dynamics in monolayers and bilayers of chromium trihalides: atomistic simulations approach.

We analyze magnetic properties of monolayers and bilayers of chromium iodide, [Formula: see text], in two different stacking configurations: AA and rhombohedral ones. Our main focus is on the corresponding Curie temperatures, hysteresis curves, equilibrium spin structures, and spin wave excitations. To obtain all these magnetic characteristic, we employ the atomistic spin dynamics and Monte Carlo simulation techniques.

Intrinsic anomalous, spin and valley Hall effects in 'ex-so-tic' van-der-Waals structures.

We consider the anomalous, spin, valley, and valley spin Hall effects in a pristine graphene-based van-der-Waals (vdW) heterostructure consisting of a bilayer graphene (BLG) sandwiched between a semiconducting van-der-Waals material with strong spin-orbit coupling (e.g., ) and a ferromagnetic insulating vdW material (e.

Electronic and magnetic properties of 2D vanadium-based transition metal dichalcogenides.

In this paper, electronic and magnetic properties of monolayers and bilayers of Vanadium-based transition metal dichalcogenides VX (X = S, Se, Te) in the H phase are investigated theoretically using methods based on DFT calculations as well as analytical methods based on effective spin Hamiltonians. The band structure has been computed for all systems, and then the results have been used to determine exchange parameters and magnetic anisotropy constants. These parameters are subsequently used for the determination of the Curie temperatures, hysteresis curves, and energy of spin-wave excitations.

Control of magnetic states and spin interactions in bilayer CrCl with strain and electric fields: an ab initio study.

Using ab initio density functional theory, we demonstrated the possibility of controlling the magnetic ground-state properties of bilayer CrCl[Formula: see text] by means of mechanical strains and electric fields. In principle, we investigated the influence of these two fields on parameters describing the spin Hamiltonian of the system. The obtained results show that biaxial strains change the magnetic ground state between ferromagnetic and antiferromagnetic phases.

Skyrmion Echo in a System of Interacting Skyrmions.

We consider helical rotation of skyrmions confined in the potentials formed by nanodisks. Based on numerical and analytical calculations we propose the skyrmion echo phenomenon. The physical mechanism of the skyrmion echo formation is also proposed.

First Principle Study on Electronic and Transport Properties of Finite-Length Nanoribbons and Nanodiscs for Selected Two-Dimensional Materials.

Using the density functional theory, we calculate electronic states of various nanoribbons and nanodiscs formed from selected two-dimensional materials, such as graphene, silicene, and hexagonal boron nitride. The main objective of the analysis is a search for zero-energy states in such systems, which is an important issue as their presence indicates certain topological properties associated with chirality. The analysis is also supported by calculating transport properties.

Highly Tunable Spin-Orbit Torque and Anisotropic Magnetoresistance in a Topological Insulator Thin Film Attached to Ferromagnetic Layer.

We investigate spin-charge conversion phenomena in hybrid structures of topological insulator thin films and magnetic insulators. We find an anisotropic inverse spin-galvanic effect that yields a highly tunable spin-orbit torque. Concentrating on the quasiballistic limit, we also predict a giant anisotropic magnetoresistance at low dopings.

Spin-Momentum-Locking Inhomogeneities as a Source of Bilinear Magnetoresistance in Topological Insulators.

A new mechanism of bilinear magnetoresistance (BMR) is proposed and studied theoretically within the minimal model describing surface electronic states in topological insulators. The BMR appears as a consequence of the second-order response to electric field, and depends linearly on both magnetic field and current (electric field). The mechanism is based on the interplay of current-induced spin polarization and scattering processes due to inhomogeneities of spin-momentum locking, that unavoidably appear as a result of structural defects in topological insulators.

Spin Hall and spin Nernst effects due to intrinsic spin-orbit coupling in monolayer and bilayer graphene.

We consider intrinsic contributions to the spin Hall and spin Nernst effects in monolayer and bilayer graphene. The spin Hall (Nernst) effect consists in the generation of transverse spin current by longitudinal electric field (temperature gradient). The relevant electronic spectrum for monolayer and bilayer graphene has been obtained from the corresponding effective Hamiltonians.

Intrinsic contribution to spin Hall and spin Nernst effects in a bilayer graphene.

We consider intrinsic contributions to the spin Hall and spin Nernst effects in a bilayer graphene. The relevant electronic spectrum is obtained from the tight binding Hamiltonian, which also includes the intrinsic spin-orbit interaction. The corresponding spin Hall and spin Nernst conductivities are compared with those obtained from effective low-energy k ⋅p and reduced Hamiltonians, which are appropriate for states in the vicinity of the Fermi level of a neutral bilayer graphene.

[Which cholesterol-lowering drugs should be used in the primary prevention of cardiovascular disease?].

Background: Several clinical practice guidelines for the treatment of hypercholesterolaemia are available. The quality of these guidelines varies and the basis for their conclusions is often not clear. We have used systematic and explicit methods in developing a new set of recommendations.

[Which antihypertensive drugs should be used in the primary prevention of cardiovascular disease?].

Background: Several clinical practice guidelines for the treatment of hypertension are available. The quality of these guidelines varies and the basis for their conclusions is often not clear. We have used systematic and explicit methods in the development of a new set of recommendations.

[Guidelines for pharmacological primary prevention of cardiovascular diseases--who should be treated?].

Background: Several clinical practice guidelines for the treatment of hypertension and hypercholesterolaemia are available. The quality of these guidelines varies and the basis for their conclusions is often not clear. We have used systematic and explicit methods in the development of a new set of recommendations.